diff --git a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
index 117a5cdf..449aeb0d 100644
--- a/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
+++ b/src/SJZY.Track.Application.Contract/Dtos/TrackContents/EditTrackContentInput.cs
@@ -40,7 +40,7 @@ public class EditTrackContentInput
     /// <summary>
     /// 轨迹标记id
     /// </summary>
-    public int[] TrackFlagIds { get; set; }
+    public int[]? TrackFlagIds { get; set; }
 
     /// <summary>
     /// 是否对外
diff --git a/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs b/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs
index eb8f7492..36523ada 100644
--- a/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs
+++ b/src/SJZY.Track.Application/Services/TrackContents/TrackContentService.cs
@@ -187,7 +187,7 @@ public class TrackContentService : ApplicationService
         #endregion 业务逻辑校验
 
         var entity = ObjectMapper.Map<EditTrackContentInput, TrackContentEntity>(input);
-        entity.TrackFlagId = input.TrackFlagIds.JoinAsString(",");
+        entity.TrackFlagId = input.TrackFlagIds?.JoinAsString(",");
         var isTrue = await _trackContentRepository.InsertAsync(entity);
 
         return new UnifyResultDto(GlobalConst.SuccessCode, "新增成功", isTrue);
@@ -255,7 +255,7 @@ public class TrackContentService : ApplicationService
             }
 
             ObjectMapper.Map(input, trackContent);
-            trackContent.TrackFlagId = input.TrackFlagIds.JoinAsString(",");
+            trackContent.TrackFlagId = input.TrackFlagIds?.JoinAsString(",");
             isTrue = await _trackContentRepository.UpdateAsync(trackContent);
 
             ts.Complete();
diff --git a/src/SJZY.Track.Domain/Aggregates/TrackContentAggregate/TrackContentEntity.cs b/src/SJZY.Track.Domain/Aggregates/TrackContentAggregate/TrackContentEntity.cs
index 60dd5757..ee797ce1 100644
--- a/src/SJZY.Track.Domain/Aggregates/TrackContentAggregate/TrackContentEntity.cs
+++ b/src/SJZY.Track.Domain/Aggregates/TrackContentAggregate/TrackContentEntity.cs
@@ -40,7 +40,7 @@ public class TrackContentEntity : IFullAuditedBasicEntitys, IAggregateRoot
     /// 轨迹标记id，多个逗号分隔
     /// </summary>
     [SugarColumn(ColumnName = "TrackFlagId")]
-    public string TrackFlagId { get; set; }
+    public string? TrackFlagId { get; set; }
 
     /// <summary>
     /// 所属轨迹状态id